Title (en)

PROCESSES FOR PRODUCING AND CASTING DUCTILE AND COMPACTED GRAPHITE CAST IRONS

Publication

EP 0090653 A3 19840321 (EN)

Application

EP 83301777 A 19830329

Priority

US 36286782 A 19820329

Abstract (en)

[origin: US4396428A] The present invention is directed to processes and apparatus for carrying out said processes wherein molten cast iron is treated with a predominantly iron alloy having the essential elements by weight of from about 0.1 to about 10.0% silicon and about 0.5 to about 4.0% magnesium. The alloy may comprise from about 0.1 to about 10.0% silicon, about 0.5 to about 4.0% magnesium, up to about 2.0% of one or more rare earth elements such as cerium about 0.5 to about 6.5% carbon, the balance being iron. Small amounts of calcium, barium or strontium and trace elements customarily found in conventional raw material may be present in the alloy. The characteristics of the alloy make it possible to establish a ready supply of treated molten iron in the foundry in holding vessels with a selected chemical composition at a given temperature. It also makes possible semi-continuous and continuous casting of ductile and compacted graphite cast irons.

IPC 1-7

C22C 33/10; C22C 37/04; C21C 1/08

IPC 8 full level

B22D 1/00 (2006.01); C21C 1/08 (2006.01); C21C 1/10 (2006.01); C22C 33/10 (2006.01); C22C 37/04 (2006.01)

CPC (source: EP KR US)

C21C 1/08 (2013.01 - EP US); C22C 33/10 (2013.01 - EP US); C22C 37/04 (2013.01 - EP KR US)

Citation (search report)

• [Y] FR 2150329 A1 19730406 - SULZER AG
• [Y] DE 2937321 A1 19800821 - INST CERCETARI STIINTIFICE
• [Y] EP 0016273 A1 19801001 - FLINN ALOYSIUS R [US], et al
• [A] US 3955973 A 19760511 - ROBINSON MICHAEL
• [A] US 3421887 A 19690114 - KUSAKA KAZUJI
• [A] GB 681552 A 19521029 - DAYTON MALLEABLE IRON CO
• [A] FR 2304677 A1 19761015 - FIAT SPA [IT]
• [A] US 2716604 A 19550830 - BOGART HAROLD N, et al
• [A] GB 913293 A 19621219 - MOND NICKEL CO LTD
• [A] FR 2404675 A1 19790427 - MO AVTOMOBILNYJ ZAVOD IM I A L [SU]
• [A] GB 1059724 A 19670222 - KESSLER HARRY HARVEY, et al
• [A] FR 2486099 A1 19820108 - FOSECO INT [GB]
• [A] DE 2006704 A1 19710819 - PASSAVANT WERKE
• [A] US 4031947 A 19770628 - CONNOLLY JOHN E
• [A] FR 1339443 A 19631004 - WORSWICK ALAN ENG
• [Y] PATENTS ABSTRACTS OF JAPAN, vol. 3, no. 142(C65), 24th November 1979, page 57C65 & JP - A - 54 120 220 (HITACHI SEISAKUSHO K.K.) 18-09-1979
• [A] PATENTS ABSTRACTS OF JAPAN, vol. 4, no. 84(M-16)(566), 17th June 1980, page 1M16 & JP - A - 55 42122 (KAWASAKI SEITETSU K.K.) 25-03-1980
• [A] PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 43, 23rd March 1978, page 4948C77 & JP - A - 52 151 615 (KUBOTA TEKKO K.K.) 16-12-1977

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

US 4396428 A 19830802; AT E34186 T1 19880515; AU 1296283 A 19831103; BR 8301563 A 19831206; CA 1214044 A 19861118; DE 3376571 D1 19880616; EP 0090653 A2 19831005; EP 0090653 A3 19840321; EP 0090653 B1 19880511; FI 830851 A0 19830315; FI 830851 L 19830930; JP S58174515 A 19831013; KR 840004182 A 19841010; MX 158524 A 19890209; PT 76445 A 19830401; PT 76445 B 19851209

DOCDB simple family (application)

US 36286782 A 19820329; AT 83301777 T 19830329; AU 1296283 A 19830329; BR 8301563 A 19830325; CA 424043 A 19830321; DE 3376571 T 19830329; EP 83301777 A 19830329; FI 830851 A 19830315; JP 5056983 A 19830328; KR 830001268 A 19830329; MX 19674483 A 19830328; PT 7644583 A 19830324